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Thornfield HouseKowa Genesis 8.5x44 Prominar XD Binoculars
Our Price: £849.00
The Kowa Genesis 8.5x44 Prominar XD is Kowa's flagship full-size binocular. It sits between a standard 8x and 10x, with a 5.2mm exit pupil for bright views in poor light and 18.5mm eye relief for glasses wearers.





Genesis 44 is the top of Kowa's binocular range. The Prominar XD objectives use fluorite-based glass to control colour fringing, and the result is a very sharp, high-contrast image with natural colour.
The body is waterproof and nitrogen filled, so it will not fog inside in cold or wet weather.
The Kowa Genesis 8.5x44 Prominar XD has a 122m field of view at 1000m, close focus of 1.7m, 18.5mm eye relief and a 5.2mm exit pupil. It weighs 940g and measures 165 x 138 x 64mm.
With 18.5mm of eye relief, most people who wear glasses can see the whole view with the eyecups twisted down.
If the Kowa Genesis 8.5x44 Prominar XD isn't quite right, these are the closest alternatives.
| Magnification | 8.5x |
| Objective lens effective diameter | 44mm |
| Minimum focusing distance | 1.7m |
| Real field of view | 7.0 degrees |
| Field of view at 1000m | 122m |
| Exit pupil diameter | 5.2mm |
| Eye relief | 18.5mm |
| Relative brightness | 27 |
| Twilight factor | 19.3 |
| Dimensions (L x W x H) | 165 x 138 x 64mm |
| Weight | 940g |
| Warranty | 10 year |
8.5x gives a little more detail than an 8x while staying brighter and steadier than a 10x. It suits birders who want one binocular for everything.
Yes. They are waterproof and nitrogen filled, so they will not fog up inside in cold or damp weather.
Eye relief is 18.5mm. Most glasses wearers can see the full view with the eyecups twisted down.
They focus down to 1.7m.
They weigh 940g.
Yes, with a binocular tripod adapter such as the Kowa KB2-MT.
Genuine UK stock, sold by people who actually use this gear -- not a general electronics marketplace.
Walk in and try before you buy at our Sheffield store, or order online with free UK mainland delivery on orders over £50.
Have equipment to trade? Part-exchange against a new camera or sell your gear for a bank transfer.
Every new item comes with the full UK manufacturer warranty, not a grey-import or parallel-import version.


